##  [Antigen Presentation](/index.php/antigen-presentation) 

  ##  [Antigen Presentation](https://health.quantumdictionary.io/antigen-presentation-0) 

  

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**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Cellular processes by which proteins (self or foreign) are proteolytically processed into peptides, loaded onto major histocompatibility complex (MHC) molecules (class I or II), and displayed on the cell surface for recognition by T lymphocyte receptors, enabling T cell activation or tolerance decisions.